Five Rounds from C# LLD to Notification Design

Round 1: Screening / Practical Coding (HackerRank) This was a practical low-level design coding problem based on a real scenario, and I was required to use C#. Given an existing repository class, I had to implement and complete every method in a Service class so that it passed the test cases. The main focus was how I organized the code, wrote clean code, handled edge cases, and thought through an…

Shared by a candidate · reported Sep 2026. Interview formats change; use it as a guide, not a script.